@media screen and (min-width: 1401px) {
  .container {
    display: flex;
    padding: 50px 0;
  }

  .left-nav {
    margin-right: 40px;
    .title {
      background-color: #0065b3;
      color: white;
      height: 54px;
      width: 350px;
      line-height: 54px;
      text-align: center;
      font-size: 30px;
      font-weight: bold;
    }
  }
}


.class {
  &-list {
    padding: 15px 20px;
    i {
      height: 20px;
      width: 20px;
      background-color: #D1D1D1;
      border-radius: 20px;
      font-size: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: white;
    }
  }
  &-item {
    background-color: #F5F5F5;
    border: 1px solid #eaeaea;
    &.active {
      .class-sub {
        max-height: 150px;
      }
      i {
        transform: rotate(90deg);
      }
    }
    + .class-item {
      margin-top: 5px;
    }
  }
  &-name {
    display: flex;
    justify-content: space-between;
    align-items: center;
    line-height: 50px;
    padding: 0 30px;
    cursor: pointer;
    i {
      transition: all .3s;
    }
  }
  &-sub {
    max-height: 0;
    overflow: hidden;
    transition: all .3s;
    a {
      display: block;
      line-height: 40px;
      padding: 0 30px;
      font-size: 14px;
      text-indent: 16px;
    }
  }
}

.info {
  border: 1px solid #F5F5F5;
  padding: 20px;
  .tel {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
    img {
      height: 42px;
      width: auto;
      margin-right: 24px;
    }
    p {
      margin-bottom: 10px;
      font-size: 19px;
    }
    a {
      font-size: 28px;
      color: #0065b3;
    }
  }
  &-name {
    font-size: 21px;
    font-weight: bold;
    margin-bottom: 15px;
  }
  &-desc div {
    padding: 10px 0;
    + div {
      border-top: 1px dotted #d5d5d5;
    }
  }
}

.content {
  flex: 1;
}

.product {
  &-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 30px;
  }
  &-item {
    border: 1px solid #f0f0f0;
    img {
      height: 100%;
      transition: all .3s;
    }
    .img {
      height: 260px;
      overflow: hidden;
      text-align: center;
    }
    &:hover {
      img {
        transform: scale(1.1);
      }
    }
  }
  &-title {
    line-height: 40px;
    padding-top: 10px;
    text-align: center;
  }
}

@media screen and (max-width: 1400px) {
  .container {
    padding-bottom: 50px;
  }
  .product {
    &-list {
      padding: 20px;
      grid-template-columns: repeat(2, 1fr);
    }
    &-item {
      img {
        height: auto;
        width: 100%;
      }
      .img {
        height: initial;
      }
    }
  }
}